0 = male
1 = female

father's education
2 = < h.s. grad
3 = h.s. grad
4 = < 2 yrs voc
5 = 2 yrs voc
6 = < 2 yrs coll
7 = > 2 yrs coll
8 = coll grad
9 = master's
10 = MD/PhD

mother's education
2 = < h.s.
3 = h.s. grad
4 = < 2 yrs voc
5 = 2 yrs voc
6 = < 2 yrs coll
7 = > 2 yrs coll
8 = coll grad
9 = master's
10 = MD/PhD

algebra 1 in h.s.
0 = not taken
1 = taken

math grades
0 = less A-B
1 = most A-B

grades in h.s.
1 = less than D
2 = mostly D
3 = half CD
4 = mostly C
5 = half BC
6 = mostly B
7 = half AB
8 = mostly A

math achievement test
-8.33 = low
25 = high

mosaic, pattern test
-4 = Low
56 = high

visualization test
-4 = low
16 = high

visualization 2
0 = Lowest
9.5 = highest

scholastic aptitude test - math
200 = minmum score
500 = average score
800 = maximum score

ethnicity
1 = Euro-Amer
2 = African-Amer
3 = Latino-Amer
4 = Asian-Amer
98 = multi ethnic
99 = blank

1 = protestant
2 = catholic
3 = no religion
98 = other religion
99 = blank

ethnicity reported by student
1 = Euro=Amer
2 = Afican=Amer
3 = Latino=Amer
4 = Asian=Amer
98 = multi ethnic
99 = blank

item01 motivation
1 = not at all typical
4 = very typical

mosaic pattern test 2
-4 = Low
56 = High

mosaic pattern test 3
-4 = "Low"
56 = "High"

item04 reversed
1 = typical
4 = not at all typical

competence scale
1 = Lowest
4 = Highest

mother's educ revised
1 = HS grad or less
2 = Some College
3 = BS or More

pleasure scale
1 = very low
2 = very high

parent's education
2 = less than h.s. grad
10 = PhD/MD

1 = min
64 = max